Read me file for �The External Validity of College Student Subject Pools in Experimental Research: A Cross-Sample Comparison of Treatment Effect Heterogeneity.�This paper examines whether student subject pools are comparable across universities by examining how respondents across three student subject pools at distinct educational institutions perform on the same survey experiment about crisis bargaining between states. It finds that subjects across institutions respond similarly to experimental treatments � with the key exception of information regarding state regime type. These findings carry implications for the use of student samples across political science and international relations. Contact Information:	Danielle L. Lupton	Colgate University	dlupton@colgate.eduThe replication data includes the following:- LuptonExternalValidityReplicatoinData.tab includes the STATA data file- LuptonExternalValidityReplicationDo.do includes the STATA do file to replicate results- LuptonExternalValidityLog.smcl includes the STATA log file replicating all results- Figure1.pdf includes the STATA graphical output for Figure 1 in the main body text- TableA_1.tab includes the STATA output for Table A.1 in the supplementary files- TableA_2.tab includes the STATA output for Table A.2 in the supplementary files- TableA_3.tab includes the STATA output for Table A.3 in the supplementary files- TableA_4.tab includes the STATA output for Table A.4 in the supplementary files- TableA_5.tab includes the STATA output for Table A.5 in the supplementary files- TableA_6.tab includes the STATA output for Table A.6 in the supplementary files- TableA_7.tab includes the STATA output for Table A.7 in the supplementary files- TableA_8.tab includes the STATA output for Table A.8 in the supplementary filesTo replicate the results, download LuptonExternalValidityReplicationData.tab � then run LuptonExternalValidityReplicationDo.do. STATA tables are likely outputted to the computer�s download folder.These files were run using Stata 14.2 on a MAC OS. Run time: 37.40 seconds. 